As engineers prepared to move the Rotating Service Structure away from Atlantis, a severe thunderstorm passed overhead, delivering rain and lightning that produced two strikes near the launch pad.

Data review showed the two strikes occurred at 12:31 p.m. and 12:40 p.m. EDT. The first struck the water tower 515 feet (157 meters) from the pad and the second struck the beach area northeast of the pad.

So far, the data review indicates no issues with any systems, including shuttle Atlantis, External Tank, Solid Rocket Boosters, Space Shuttle Main Engines or Ground Support Equipment.

Review of the data will occur again during the traditional Tanking Weather Meeting scheduled for 1:30 a.m. Friday, which is the point where managers will decide to proceed with fueling Atlantis' tank ahead of launch. Fueling is scheduled to start at 2:01 a.m. Friday leading to launch at 11:26 a.m.

STS-135 Launch Pad Lightning Strike VideoA pair of lightning strikes occurred near launch pad 39-A at NASA's Kennedy Space Center at 12:31 p.m. and 12:40 p.m. EDT on July 7. The first struck the water tower 515 feet from the pad and the second struck the beach area northeast of the pad. Early data indicate no issues with any systems, including shuttle Atlantis, External Tank, Solid Rocket Boosters, Space Shuttle Main Engines or Ground Support Equipment.